Séminaire Indicang 18 et 19 mai 2005 Indicang – Interreg III UK PARTNER – Westcountry Rivers Trust UK Project Manager – Dr Polly Bown
Séminaire Indicang 18 et 19 mai 2005
Indicang – Interreg III
UK PARTNER – Westcountry Rivers Trust
UK Project Manager – Dr Polly Bown
Séminaire Indicang 18 et 19 mai 2005
INDICANG
Knowledge of the catchments (Environment)
Eel Population (Resource) Fishing Pressure (Exploitation) Project Contacts and Project Promotion Summary of Progress in 2004 Summary of Future Work
Séminaire Indicang 18 et 19 mai 2005
Knowledge of the catchments (Environment)
Previous Knowledge Tamar - 975km2 catchment
and 139km of river
Camel - 413km2 catchment
and 108km of river. The main
tributary is the Allen
Fowey - 178km2 catchment
and 35km of river.
Slapton Ley and the River Gara
The largest freshwater lake in South
West England. It is recognised as
a National Nature Reserve (NNR)
wetland (73ha)
River Fowey
Slapton Ley
River Camel
Séminaire Indicang 18 et 19 mai 2005
Knowledge of the catchments (Environment)
Rate of River Flow in m/s Past data available
from the Environment
Agency on all river
catchments Many sites Data taken monthly Long data sets
Environment Agency Gauging Station
on the river Fowey
Future work – collect and use relevant data from these large data sets.
Séminaire Indicang 18 et 19 mai 2005
Knowledge of the catchments (Environment)
Water Quality Water quality data from the Environment Agency for
sites on the Tamar and Camel (2000 – 2004)
Water Quality parameters include:• Pesticides – Aldrin, Atrazine, Benzo-[A]-Pyrene, DDE, DDT,
Dieldrin, Endosulphan, Endrin, PCBs• Nutrients – Nitrate, Nitrite, Orthophosphate, Phosphate,
Phosphorus, Potassium• Other – BOD, Conductivity, pH, Temperature, Wind Direction
Future work – Collect data for the river Fowey and Slapton Ley, identify and use relevant data from these large data sets.
Séminaire Indicang 18 et 19 mai 2005
Knowledge of the catchments (Environment)
Wetland Loss Currently obtaining permission to use wetland habitat
maps created by English Nature
UK wetland and potential eel habitat
Future work – Potential to identify wetland loss from the use of past and present aerial photographs.
Séminaire Indicang 18 et 19 mai 2005
Eel Population (Resource)
Presence/Absence TamarPresence/absence of yellow eels* within the catchment with location of weirs and waterfalls
*Data obtained from the Environment Agency (2005) Reproduced by permission of Ordnance Survey on behalfof HMSO. © Crown Copyright and database right 2005. All rights reserved, Environment Agency. Ordnance Survey Licence Number 100026380.
•1987 – 1996
•1997 – 2004
Séminaire Indicang 18 et 19 mai 2005
Eel Population (Resource)
Presence/Absence FoweyPresence/absence of yellow eels* within the catchment
Future work – Collect and digitise data for the Camel and Slapton Ley
*Data obtained from the Environment Agency (2005)Reproduced by permission of Ordnance Survey on behalf of HMSO. © Crown Copyright and database right 2005. All rights reserved, Environment Agency. Ordnance Survey Licence Number 100026380.
•1987 – 1996•1997 – 2004
•1977 – 1986
Séminaire Indicang 18 et 19 mai 2005
Eel Population (Resource)
Length Data TamarLength data obtained from yellow eels* within the catchment
• 2002 – 2004
*Data obtained from the Environment Agency (2005) and Knights (Westminster University)
R. TAMAR - Mean length (cm) per site (2002-2004) v. approximate distance from tidal limit (km)
0
10
20
30
40
50
60
0 10 20 30 40 50 60
Approximate distance km
Leng
th c
m
Séminaire Indicang 18 et 19 mai 2005
Eel Population (Resource)
Length Data FoweyLength data obtained from yellow eels* within the catchment
• 1977 – 1987
Future work – Locate more data, collect and analyse data for the Camel and Slapton Ley
*Data obtained from the Environment Agency (2005) and Knights (Westminster University)
R. FOWEY - Mean length (cm) per site (1977-1987) v. distance from tidal limit (km)
0
10
20
30
40
50
60
0 5 10 15 20 25 30 35 40
Distance km
Leng
th c
m
Séminaire Indicang 18 et 19 mai 2005
Eel Population (Resource)
Density Data
FoweyDensity data obtained for yellow eels* within the catchment
• 1977 – 1987
*Data obtained from the Environment Agency (2005) and Knights (Westminster University)
R. FOWEY - Mean density (N/100m2) per site (1977-1987) v. distance from tidal limit (km)
0
10
20
30
40
50
60
0 5 10 15 20 25 30 35 40
Distance km
De
nsi
ty N
/10
0m
2
Séminaire Indicang 18 et 19 mai 2005
Eel Population (Resource)
Density Data* Tamar
• Three densities estimate for three sites (1978)
Future work – Locate more data, collect and analyse data for the Camel and Slapton Ley
*Data obtained from the Environment Agency (2005)
Séminaire Indicang 18 et 19 mai 2005
Eel Population (Resource)
Migration No data for elver and silver eels Collaboration with King’s College, London and the
Field Studies Council to examine elver and silver eels at Slapton Ley
Elver trap at Slapton Ley
Séminaire Indicang 18 et 19 mai 2005
Eel Population (Resource)
Age Data Locating age data Collaboration with King’s College, London and the
Environment Agency to gather age data for eels at Slapton Ley, Fowey and Tamar
Eel Health Establishing links with the University of Exeter who
have past data on eel parasites
Séminaire Indicang 18 et 19 mai 2005
Fishing Pressure (Exploitation)
Professional Fishermen
Sport Fishermen
Location of Fishing Areas A number of local fishing groups and national fishing
groups are currently being approached to determine numbers of fishermen and location of fishing areas.
Fishing Statistics
Characteristics of catches (past and present) Currently attempting to retrieve and compile this
data
Séminaire Indicang 18 et 19 mai 2005
Project Contacts and Project Promotion
Current Contacts Environment Agency CEFAS Kings College, London Westminster University Field Studies Centre (Slapton Ley) Local fishing groups South West Rivers Association Association of Rivers Trust
Project Promotion Press Release – WRT newsletter, local and national press Seminar Presentation Distribution of newsletters
Séminaire Indicang 18 et 19 mai 2005
Summary of progress in 2004Environment Located data on catchment characteristics and river flows Collected water quality data for the Tamar and Camel
Resource Collected past presence/absence data for yellow eels on the Tamar and Fowey Collected past length data for yellow eels on the Tamar and Fowey Collected past density data for yellow eels on the Fowey Established contacts to gain data on elver recruitment and silver eel migration
Exploitation Fishing Groups and Environment Agency approached about catch characteristics
Contacts and Promotion Contacts and promotion with national and local groups (e.g. Agencies, Universities, Rivers Trusts, Local Angling Groups) Seminar, press release and distribution of newsletters
Séminaire Indicang 18 et 19 mai 2005
Summary of future work 2005/6Environment Collect further river flow and water quality data for all catchments, identify and use the relevant data from these large data sets Investigate the potential to identify wetland loss from the use of past and present aerial photographs
Resource Collect data on yellow eel presence/absence for the Camel and Slapton Ley Locate further length and density data for all catchments Locate age data through collaboration with Kings College, London and the Environment Agency Establish links to gain past data on eel parasites
Exploitation Retrieve and compile data on catch characteristics and fishing pressure for all catchments
Contacts and Promotion Promote INDICANG with local fishing groups
Séminaire Indicang 18 et 19 mai 2005
Westcountry Rivers Trust
10 Exeter Street, Launceston, Cornwall. PL15 9EQ
Tel: (0870) 7740704
Registered Charity No. 1045806